Data transfer method, block synchronizing signal detecting...

Details Data transfer method, block synchronizing signal detecting... Data transfer method, block synchronizing signal detecting...

2006-08-15

2006-08-15

Phu, Phuong (Department: 2611)

Pulse or digital communications

Synchronizers

Frequency or phase control using synchronizing signal

C375S362000, C375S341000, C375S262000, C375S265000

Reexamination Certificate

active

07092470

ABSTRACT:
There is provided a method of detecting a block sync signal in which a sync signal and code sequence can be distinguished from each other to recognize the head of a block composed of a plurality of code words at the time of data reading or reception. A sync word detector (10) is supplied with a window signal Sync_window generated based on a parity OK signal supplied from a parity check circuit (12) and indicating a period between the sync word included in signal read from the medium (1) and the ID information, and detects the sync word as to a bit string detected by a PRML Viterbi detector (6) with the use of the Sync_window signal.

REFERENCES:
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patent: 6347390 (2002-02-01), Ino
patent: 6532567 (2003-03-01), Ino
patent: 9-231692 (1997-09-01), None
patent: 2000-124815 (2000-04-01), None
patent: 2000-260131 (2000-09-01), None

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